1 /*- 2 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 3 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 4 * Copyright (c) 1995 Hannu Savolainen 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: head/sys/dev/sound/pcm/sound.h 274035 2014-11-03 11:11:45Z bapt $ 29 */ 30 31 /* 32 * first, include kernel header files. 33 */ 34 35 #ifndef _OS_H_ 36 #define _OS_H_ 37 38 #ifdef _KERNEL 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/filio.h> 42 #include <sys/sockio.h> 43 #include <sys/fcntl.h> 44 #include <sys/proc.h> 45 #include <sys/kernel.h> /* for DATA_SET */ 46 #include <sys/module.h> 47 #include <sys/conf.h> 48 #include <sys/file.h> 49 #include <sys/uio.h> 50 #include <sys/syslog.h> 51 #include <sys/errno.h> 52 #include <sys/malloc.h> 53 #include <sys/bus.h> 54 #include <sys/rman.h> 55 #include <sys/limits.h> 56 #include <sys/mman.h> 57 #include <sys/poll.h> 58 #include <sys/sbuf.h> 59 #include <sys/soundcard.h> 60 #include <sys/sysctl.h> 61 #include <sys/kobj.h> 62 #include <vm/vm.h> 63 #include <vm/pmap.h> 64 65 #include <sys/lock.h> 66 #include <sys/mplock2.h> 67 #include <sys/mutex.h> 68 #include <sys/condvar.h> 69 #include <sys/taskqueue.h> 70 71 struct pcm_channel; 72 struct pcm_feeder; 73 struct snd_dbuf; 74 struct snd_mixer; 75 76 #include <dev/sound/pcm/buffer.h> 77 #include <dev/sound/pcm/matrix.h> 78 #include <dev/sound/pcm/matrix_map.h> 79 #include <dev/sound/pcm/channel.h> 80 #include <dev/sound/pcm/feeder.h> 81 #include <dev/sound/pcm/mixer.h> 82 #include <dev/sound/pcm/dsp.h> 83 #include <dev/sound/clone.h> 84 #include <dev/sound/unit.h> 85 86 #define PCM_SOFTC_SIZE (sizeof(struct snddev_info)) 87 88 #define SND_STATUSLEN 64 89 90 #define SOUND_MODVER 5 91 92 #define SOUND_MINVER SOUND_MODVER 93 #define SOUND_PREFVER SOUND_MODVER 94 #define SOUND_MAXVER SOUND_MODVER 95 96 /* 97 * Minor number encoding: 0xFFFF00FF 98 * unit 0x000000FF 99 * chan 0x07FF0000 100 * devtype 0xF8000000 101 */ 102 103 #define SND_U_MASK 0x000000FF 104 #define SND_C_MASK 0x07FF0000 105 #define SND_D_MASK 0xF8000000 106 107 #define PCMMAXUNIT 255 108 #define PCMMAXDEV 31 109 #define PCMMAXCHAN 2047 110 #define PCMMAXCLONE PCMMAXCHAN 111 112 /* 113 * 114 */ 115 #define PCMUNIT(x) (minor(x) & 0x00FF) 116 #define PCMSUBUNIT(x) ((minor(x) >> 16) & 0x07FF) 117 #define PCMDEV(x) ((minor(x) >> 27) & 0x001F) 118 119 #define PCMUNIT_DEFAULT 0x00FF 120 121 #define PCMMKMINOR(u, d, sub) (snd_u2unit(u) | snd_c2unit(sub) | snd_d2unit(d)) 122 123 #define snd_unit2u(m) ((m) & 0x00FF) 124 #define snd_unit2c(m) (((m) >> 16) & 0x07FF) 125 #define snd_unit2d(m) (((m) >> 27) & 0x001F) 126 127 #define snd_u2unit(u) ((u) & 0x00FF) 128 #define snd_c2unit(c) (((c) & 0x07FF) << 16) 129 #define snd_d2unit(d) (((d) & 0x001F) << 27) 130 131 #define snd_mkunit(u, d, c) (snd_u2unit(u) | snd_d2unit(d) | snd_c2unit(c)) 132 133 /* 134 * By design, limit possible channels for each direction. 135 */ 136 #define SND_MAXHWCHAN 256 137 #define SND_MAXVCHANS SND_MAXHWCHAN 138 139 #define SD_F_SIMPLEX 0x00000001 140 #define SD_F_AUTOVCHAN 0x00000002 141 #define SD_F_SOFTPCMVOL 0x00000004 142 /* 143 * Obsolete due to better matrixing 144 */ 145 #if 0 146 #define SD_F_PSWAPLR 0x00000008 147 #define SD_F_RSWAPLR 0x00000010 148 #endif 149 #define SD_F_DYING 0x00000008 150 #define SD_F_SUICIDE 0x00000010 151 #define SD_F_BUSY 0x00000020 152 #define SD_F_MPSAFE 0x00000040 153 #define SD_F_REGISTERED 0x00000080 154 #define SD_F_BITPERFECT 0x00000100 155 #define SD_F_VPC 0x00000200 /* volume-per-channel */ 156 #define SD_F_EQ 0x00000400 /* EQ */ 157 #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 158 #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 159 #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 160 161 #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 162 #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 163 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 164 165 #define SD_F_PRIO_RD 0x10000000 166 #define SD_F_PRIO_WR 0x20000000 167 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 168 #define SD_F_DIR_SET 0x40000000 169 #define SD_F_TRANSIENT 0xf0000000 170 171 #define SD_F_BITS "\020" \ 172 "\001SIMPLEX" \ 173 "\002AUTOVCHAN" \ 174 "\003SOFTPCMVOL" \ 175 "\004DYING" \ 176 "\005SUICIDE" \ 177 "\006BUSY" \ 178 "\007MPSAFE" \ 179 "\010REGISTERED" \ 180 "\011BITPERFECT" \ 181 "\012VPC" \ 182 "\013EQ" \ 183 "\014EQ_ENABLED" \ 184 "\015EQ_BYPASSED" \ 185 "\016EQ_PC" \ 186 "\035PRIO_RD" \ 187 "\036PRIO_WR" \ 188 "\037DIR_SET" 189 190 #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 191 !((x)->flags & SD_F_DYING)) 192 #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 193 ((x)->flags & SD_F_REGISTERED)) 194 195 /* many variables should be reduced to a range. Here define a macro */ 196 #define RANGE(var, low, high) (var) = \ 197 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 198 #define DSP_BUFFSIZE (8192) 199 200 /* make figuring out what a format is easier. got AFMT_STEREO already */ 201 #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 202 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 203 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 204 #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 205 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 206 #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 207 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 208 #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 209 AFMT_S16_BE | AFMT_U16_BE) 210 211 #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 212 AFMT_32BIT) 213 214 /* Supported vchan mixing formats */ 215 #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 216 217 #define AFMT_PASSTHROUGH AFMT_AC3 218 #define AFMT_PASSTHROUGH_RATE 48000 219 #define AFMT_PASSTHROUGH_CHANNEL 2 220 #define AFMT_PASSTHROUGH_EXTCHANNEL 0 221 222 /* 223 * We're simply using unused, contiguous bits from various AFMT_ definitions. 224 * ~(0xb00ff7ff) 225 */ 226 #define AFMT_ENCODING_MASK 0xf00fffff 227 #define AFMT_CHANNEL_MASK 0x01f00000 228 #define AFMT_CHANNEL_SHIFT 20 229 #define AFMT_CHANNEL_MAX 0x7f 230 #define AFMT_EXTCHANNEL_MASK 0x0e000000 231 #define AFMT_EXTCHANNEL_SHIFT 25 232 233 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 234 235 #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 236 AFMT_EXTCHANNEL_SHIFT) 237 238 #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 239 AFMT_CHANNEL_SHIFT) 240 241 #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 242 (((v) & AFMT_24BIT) ? 24 : \ 243 ((((v) & AFMT_16BIT) || \ 244 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 245 246 #define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 247 #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 248 249 #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 250 (((c) << AFMT_CHANNEL_SHIFT) & \ 251 AFMT_CHANNEL_MASK) | \ 252 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 253 AFMT_EXTCHANNEL_MASK)) 254 255 #define AFMT_U8_NE AFMT_U8 256 #define AFMT_S8_NE AFMT_S8 257 258 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 259 260 #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 261 AFMT_U24_NE | AFMT_U32_NE) 262 263 /* 264 * Minor numbers for the sound driver. 265 * 266 * Unfortunately Creative called the codec chip of SB as a DSP. For this 267 * reason the /dev/dsp is reserved for digitized audio use. There is a 268 * device for true DSP processors but it will be called something else. 269 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 270 */ 271 272 #define SND_DEV_CTL 0 /* Control port /dev/mixer */ 273 #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 274 #define SND_DEV_MIDIN 2 /* Raw midi access */ 275 #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 276 #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 277 #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 278 #define SND_DEV_STATUS 6 /* /dev/sndstat */ 279 /* #7 not in use now. */ 280 #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 281 #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 282 #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 283 #define SND_DEV_NORESET 10 284 285 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 286 #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 287 #define SND_DEV_DSPHW_REC 13 /* specific record channel */ 288 #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 289 290 #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 291 292 /* 293 * OSSv4 compatible device. For now, it serve no purpose and 294 * the cloning itself will forward the request to ordinary /dev/dsp 295 * instead. 296 */ 297 #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 298 #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 299 #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 300 #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 301 #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 302 303 #define SND_DEV_LAST SND_DEV_DSP_SPDIFIN 304 #define SND_DEV_MAX PCMMAXDEV 305 306 #define DSP_DEFAULT_SPEED 8000 307 308 #define ON 1 309 #define OFF 0 310 311 extern int pcm_veto_load; 312 extern int snd_unit; 313 extern int snd_maxautovchans; 314 extern int snd_verbose; 315 extern devclass_t pcm_devclass; 316 extern struct unrhdr *pcmsg_unrhdr; 317 318 /* 319 * some macros for debugging purposes 320 * DDB/DEB to enable/disable debugging stuff 321 * BVDDB to enable debugging when bootverbose 322 */ 323 #define BVDDB(x) if (bootverbose) x 324 325 #ifndef DEB 326 #define DEB(x) 327 #endif 328 329 SYSCTL_DECL(_hw_snd); 330 331 int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 332 int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 333 pid_t pid, char *comm, int devunit); 334 int pcm_chnrelease(struct pcm_channel *c); 335 int pcm_chnref(struct pcm_channel *c, int ref); 336 int pcm_inprog(struct snddev_info *d, int delta); 337 338 struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 339 int pcm_chn_destroy(struct pcm_channel *ch); 340 int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 341 int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 342 343 int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 344 unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 345 int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 346 int pcm_unregister(device_t dev); 347 int pcm_setstatus(device_t dev, char *str); 348 u_int32_t pcm_getflags(device_t dev); 349 void pcm_setflags(device_t dev, u_int32_t val); 350 void *pcm_getdevinfo(device_t dev); 351 352 353 int snd_setup_intr(device_t dev, struct resource *res, int flags, 354 driver_intr_t hand, void *param, void **cookiep); 355 356 void *snd_mtxcreate(const char *desc, const char *type); 357 void snd_mtxfree(void *m); 358 void snd_mtxassert(void *m); 359 #define snd_mtxlock(m) lockmgr(m, LK_EXCLUSIVE) 360 #define snd_mtxunlock(m) lockmgr(m, LK_RELEASE) 361 362 typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); 363 int sndstat_acquire(struct thread *td); 364 int sndstat_release(struct thread *td); 365 int sndstat_register(device_t dev, char *str, sndstat_handler handler); 366 int sndstat_registerfile(char *str); 367 int sndstat_unregister(device_t dev); 368 int sndstat_unregisterfile(char *str); 369 370 #define SND_DECLARE_FILE(version) \ 371 _SND_DECLARE_FILE(__LINE__, version) 372 373 #define _SND_DECLARE_FILE(uniq, version) \ 374 __SND_DECLARE_FILE(uniq, version) 375 376 #define __SND_DECLARE_FILE(uniq, version) \ 377 static char sndstat_vinfo[] = version; \ 378 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \ 379 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo) 380 381 /* usage of flags in device config entry (config file) */ 382 #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 383 #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 384 385 /* ought to be made obsolete but still used by mss */ 386 #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 387 #define DV_F_DEV_SHIFT 8 /* force device type/class */ 388 389 /* 390 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 391 * so that the macro versions of pcm_{,un}lock can dereference them. 392 * we also have to do this now makedev() has gone away. 393 */ 394 395 struct snddev_info { 396 struct { 397 struct { 398 SLIST_HEAD(, pcm_channel) head; 399 struct { 400 SLIST_HEAD(, pcm_channel) head; 401 } busy; 402 struct { 403 SLIST_HEAD(, pcm_channel) head; 404 } opened; 405 } pcm; 406 } channels; 407 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; 408 struct snd_clone *clones; 409 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 410 unsigned flags; 411 int inprog; 412 unsigned int bufsz; 413 void *devinfo; 414 device_t dev; 415 char status[SND_STATUSLEN]; 416 struct lock *lock; 417 struct cdev *mixer_dev; 418 struct cdev *dsp_clonedev; 419 uint32_t pvchanrate, pvchanformat; 420 uint32_t rvchanrate, rvchanformat; 421 int32_t eqpreamp; 422 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 423 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 424 struct cv cv; 425 }; 426 427 void sound_oss_sysinfo(oss_sysinfo *); 428 int sound_oss_card_info(oss_card_info *); 429 430 #define PCM_LOCKOWNED(d) (lockstatus((d)->lock, curthread) == LK_EXCLUSIVE) 431 #define PCM_LOCK(d) lockmgr((d)->lock, LK_EXCLUSIVE) 432 #define PCM_UNLOCK(d) lockmgr((d)->lock, LK_RELEASE) 433 #define PCM_TRYLOCK(d) lockmgr_try((d)->lock, LK_EXCLUSIVE) 434 #define PCM_LOCKASSERT(d) KKASSERT(lockstatus((d)->lock, curthread) == LK_EXCLUSIVE) 435 #define PCM_UNLOCKASSERT(d) KKASSERT(lockstatus((d)->lock, curthread) != LK_EXCLUSIVE) 436 437 /* 438 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 439 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 440 */ 441 #ifdef SND_DIAGNOSTIC 442 #define PCM_WAIT(x) do { \ 443 if (!PCM_LOCKOWNED(x)) \ 444 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 445 __func__, __LINE__); \ 446 while ((x)->flags & SD_F_BUSY) { \ 447 if (snd_verbose > 3) \ 448 device_printf((x)->dev, \ 449 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 450 __func__, __LINE__); \ 451 cv_wait(&(x)->cv, (x)->lock); \ 452 } \ 453 } while (0) 454 455 #define PCM_ACQUIRE(x) do { \ 456 if (!PCM_LOCKOWNED(x)) \ 457 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 458 __func__, __LINE__); \ 459 if ((x)->flags & SD_F_BUSY) \ 460 panic("%s(%d): [PCM ACQUIRE] " \ 461 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 462 (x)->flags |= SD_F_BUSY; \ 463 } while (0) 464 465 #define PCM_RELEASE(x) do { \ 466 if (!PCM_LOCKOWNED(x)) \ 467 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 468 __func__, __LINE__); \ 469 if ((x)->flags & SD_F_BUSY) { \ 470 (x)->flags &= ~SD_F_BUSY; \ 471 if ((x)->cv.cv_waiters != 0) { \ 472 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 473 device_printf((x)->dev, \ 474 "%s(%d): [PCM RELEASE] " \ 475 "cv_waiters=%d > 1!\n", \ 476 __func__, __LINE__, \ 477 (x)->cv.cv_waiters); \ 478 cv_broadcast(&(x)->cv); \ 479 } \ 480 } else \ 481 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 482 __func__, __LINE__); \ 483 } while (0) 484 485 /* Quick version, for shorter path. */ 486 #define PCM_ACQUIRE_QUICK(x) do { \ 487 if (PCM_LOCKOWNED(x)) \ 488 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 489 __func__, __LINE__); \ 490 PCM_LOCK(x); \ 491 PCM_WAIT(x); \ 492 PCM_ACQUIRE(x); \ 493 PCM_UNLOCK(x); \ 494 } while (0) 495 496 #define PCM_RELEASE_QUICK(x) do { \ 497 if (PCM_LOCKOWNED(x)) \ 498 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 499 __func__, __LINE__); \ 500 PCM_LOCK(x); \ 501 PCM_RELEASE(x); \ 502 PCM_UNLOCK(x); \ 503 } while (0) 504 505 #define PCM_BUSYASSERT(x) do { \ 506 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 507 panic("%s(%d): [PCM BUSYASSERT] " \ 508 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 509 } while (0) 510 511 #define PCM_GIANT_ENTER(x) do { \ 512 int _pcm_giant = 0; \ 513 if (PCM_LOCKOWNED(x)) \ 514 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 515 __func__, __LINE__); \ 516 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 517 device_printf((x)->dev, \ 518 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 519 __func__, __LINE__); \ 520 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 521 do { \ 522 mtx_lock(&Giant); \ 523 _pcm_giant = 1; \ 524 } while (0) 525 526 #define PCM_GIANT_EXIT(x) do { \ 527 if (PCM_LOCKOWNED(x)) \ 528 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 529 __func__, __LINE__); \ 530 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 531 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 532 __func__, __LINE__); \ 533 if ((x)->flags & SD_F_MPSAFE) { \ 534 if (_pcm_giant == 1) \ 535 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 536 __func__, __LINE__); \ 537 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 538 device_printf((x)->dev, \ 539 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 540 __func__, __LINE__); \ 541 } \ 542 if (_pcm_giant != 0) { \ 543 if (mtx_owned(&Giant) == 0) \ 544 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 545 __func__, __LINE__); \ 546 _pcm_giant = 0; \ 547 mtx_unlock(&Giant); \ 548 } \ 549 } while (0) 550 #else /* SND_DIAGNOSTIC */ 551 #define PCM_WAIT(x) do { \ 552 PCM_LOCKASSERT(x); \ 553 while ((x)->flags & SD_F_BUSY) \ 554 cv_wait(&(x)->cv, (x)->lock); \ 555 } while (0) 556 557 #define PCM_ACQUIRE(x) do { \ 558 PCM_LOCKASSERT(x); \ 559 KASSERT(!((x)->flags & SD_F_BUSY), \ 560 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 561 __func__, __LINE__)); \ 562 (x)->flags |= SD_F_BUSY; \ 563 } while (0) 564 565 #define PCM_RELEASE(x) do { \ 566 PCM_LOCKASSERT(x); \ 567 KASSERT((x)->flags & SD_F_BUSY, \ 568 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 569 __func__, __LINE__)); \ 570 (x)->flags &= ~SD_F_BUSY; \ 571 if ((x)->cv.cv_waiters != 0) \ 572 cv_broadcast(&(x)->cv); \ 573 } while (0) 574 575 /* Quick version, for shorter path. */ 576 #define PCM_ACQUIRE_QUICK(x) do { \ 577 PCM_UNLOCKASSERT(x); \ 578 PCM_LOCK(x); \ 579 PCM_WAIT(x); \ 580 PCM_ACQUIRE(x); \ 581 PCM_UNLOCK(x); \ 582 } while (0) 583 584 #define PCM_RELEASE_QUICK(x) do { \ 585 PCM_UNLOCKASSERT(x); \ 586 PCM_LOCK(x); \ 587 PCM_RELEASE(x); \ 588 PCM_UNLOCK(x); \ 589 } while (0) 590 591 #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 592 ((x)->flags & SD_F_BUSY), \ 593 ("%s(%d): [PCM BUSYASSERT] " \ 594 "Failed, snddev_info=%p", \ 595 __func__, __LINE__, x)) 596 597 #define PCM_GIANT_ENTER(x) do { \ 598 if (!((x)->flags & SD_F_MPSAFE)) \ 599 get_mplock(); \ 600 } while (0) 601 602 #define PCM_GIANT_EXIT(x) do { \ 603 if (!((x)->flags & SD_F_MPSAFE)) \ 604 rel_mplock(); \ 605 } while (0) 606 #endif /* !SND_DIAGNOSTIC */ 607 608 #define PCM_GIANT_LEAVE(x) PCM_GIANT_EXIT(x) 609 610 #ifdef KLD_MODULE 611 #define PCM_KLDSTRING(a) ("kld " # a) 612 #else 613 #define PCM_KLDSTRING(a) "" 614 #endif 615 616 #endif /* _KERNEL */ 617 618 #endif /* _OS_H_ */ 619